Show:
Easy Subtraction.
Easy Addition.
Medium Subtraction.
Medium Addition.
RANDOM!
100

2 - 0 = 

2


100

2 + 2 = 

4 

100

13 - 5 = 

8
100

12 + 8 = 

20 

100

30 + 2 = 

32

200

10 - 9 = 

1

200

3 + 0 = 

3

200

14 - 9 = 

5

200

19 + 4 = 

23

200

2 x 2 = 

4

300

20 - 10 = 

10 

300

12 + 2 = 

14 

300

20 - 8 = 

12

300

23 + 6 = 

29

300

60 - 1 = 

59 

400

40 - 20 = 

20 

400

20 + 7 = 

27 

400

60 - 12 = 

48

400

60 + 28 =

88

400

3 x 2 = 

6
500

100 - 40 = 

60 

500

100 + 40 = 

140 

500

80 - 24 = 

56

500

30 + 56 = 

86

500
10 x 9 = 

90